In the introduction to this paper, the author pointed out the prominent physical features of the district in which the landslip occurred. At the point where the trap-ridge, which stretches in a south-west direction from Linlithgow to the neighbourhood of Airdrie, sendsone irregular fork to the north-west, and another to the south-west, a broad depression occurs. In this lies the Auchingray moss, the scene of the landslip. Here the parish of New Monkland, Lanarkshire, meets that of Slamannan, Stirlingshire, The following figure is a rough plan of the ground between the Slamannan Railway and Haldane's Moss Road. The area specially influenced by the landslip is enclosed by dotted lines.